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Under Armour Men's Base 4.0 Long Sleeve Baselayer

About This Item

Bring the heat in the Under Armour® Men’s Base 4.0 Long Sleeve Baselayer. This baselayer locks in your body’s heat so you stay warm in the coldest conditions. With moisture-wicking material and UA Scent Control technology, you’ll stay dry and fresh during your intense training sessions.

Fit

  • Fitted long sleeve baselayer

Technology

  • UA Base™ 4.0 locks in your body’s heat to deliver extreme warmth even in the brutal cold
  • Moisture transport system wicks sweat and dries quickly
  • UA Scent Control prevents the growth of odor causing microbes to keep you feeling fresh

Design

  • Crew neckline
  • 4-way stretch material maintains shape and allows for greater mobility
  • Soft, brushed grid interior traps air against your skin to keep you warm and comfortable
  • Under Armour® branding on chest
  • Brand : Under Armour
  • Country of Origin : Imported
  • Fabric : Full Garment: Polyester
  • Web ID: 19UARMBS40CRWBLKXAOA

REVIEWS

4.3
88%
Recommended

138 Reviews

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Great

By far, the best thermal base layer I have ever had in my whole life, keeps you extremely worn and great for cold weather

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So Warm!

I love this baselayer - it is so warm! This has been the coldest winter we’ve had in New England in 10 years, and this has really helped for outdoor activities. Whether it’s been ice skating, playing in the snow with the kids, or just shoveling, I’ve been warm and comfortable. I would say this fits TTS. Highly recommend!

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Warmest Gear

I’ve been wearing these 4.0 under armor for years and they are the best

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Outstanding Layering Shirt

Works well except for the coldest of nights. I use it to coach so not much movement with it. But it’ll keep you warm on any Los Angeles night

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Fit And Warmth

Great product. Fits nicely, comfortable and warm brrr

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Ua

I bought these last month and they’re perfect and a great price

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Nice Fit And Warmth

True to size. Comfortable keeps me warm without a lot of bulk

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For Ever Warm

Perfect fit large is the right size and it is very comfortable and warm while hunting white tail deer

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Comfortable And Warm

Excellent product. As warm of base layer as I have owned and incredibly comfortable!

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Warmth Without Bulk!

Remarkably light weight for the warmth it provides. Bought for snowmobiling in Quebec.

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A Fit Is A Bit Weird

It looks great. However, the chest area is a bit boxy.

Not Warm

I bought ua base layer 4.0 because it says it will keep you warm down below zero!! I put on the pants and shirt 4.0 and put on a t shirt and overalls. The temperature outside was 45 so I thought I should be ok. Boy was I wrong!!! I could only stay out there hunting for two hours. I was freezing and not enjoying the hunt. I could have bought 5-6 sets of cheaper base layers for what I paid for these!! I will never spend my money for under armor products again. Under armor does not work as described by manufacturer, so buy cheap base layers since you have to wear a bunch of clothes to stay warm!!! Don’t waste your money on these!!!!

Great Product

Bought top and bottoms 12 years ago. Works and looks as good as the day i bought them. My go to base layer for hunting. Always buy a size bigger than normal size.

Customer D

Works great keeps me warm during the cold days.

Read All Reviews (138)

Q&A

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